private void ReadOctoDeltaHeader()
{
var version = reader.ReadByte();
if (version != OctoBinaryFormat.Version)
{
throw new InvalidDataException("The delta file uses a newer file format than this program can handle.");
}
var hashAlgorithmName = reader.ReadString();
hashAlgorithm = SupportedAlgorithms.Hashing.Create(hashAlgorithmName);
var hashLength = reader.ReadInt32();
expectedHash = reader.ReadBytes(hashLength);
var endOfMeta = reader.ReadBytes(OctoBinaryFormat.EndOfMetadata.Length);
if (!StructuralComparisons.StructuralEqualityComparer.Equals(OctoBinaryFormat.EndOfMetadata, endOfMeta))
{
throw new InvalidDataException("The delta file appears to be corrupt.");
}
_metadata = new DeltaMetadataLegacy
{
HashAlgorithm = hashAlgorithmName,
ExpectedFileHashAlgorithm = hashAlgorithmName,
ExpectedFileHash = Convert.ToBase64String(expectedHash)
};
Type = RsyncFormatType.Octodiff;
}
private void ReadFastRsyncDeltaHeader()
{
var version = reader.ReadByte();
if (version != FastRsyncBinaryFormat.Version)
{
throw new InvalidDataException("The delta file uses a newer file format than this program can handle.");
}
var metadataStr = reader.ReadString();
_metadata = JsonConvert.DeserializeObject <DeltaMetadataLegacy>(metadataStr, JsonSerializationSettings.JsonSettings);
hashAlgorithm = SupportedAlgorithms.Hashing.Create(_metadata.HashAlgorithm);
expectedHash = Convert.FromBase64String(_metadata.ExpectedFileHash);
Type = RsyncFormatType.FastRsync;
}